Trane R Series Installation Operation & Maintenance page 86

Hex Diagnostic Name and
Code Source
384 Evaporator Water Flow
Overdue
5C4 Excessive Loss of Comm
87 External Chilled Water
Setpoint
89 External Current Limit
Setpoint
1C6 High Differential Refrigerant
Pressure - Circuit 1
1C7 High Differential Refrigerant
Pressure - Circuit 2
584 High Evaporator Liquid Level
- Circuit 1
5B7 High Evaporator Liquid Level
- Circuit 2
6B8 High Evaporator Refrigerant
Pressure
1DE High Oil Temperature -
Compressor 1A
1E0 High Oil Temperature -
Compressor 1B
1DD High Oil Temperature -
Compressor 2A
1DF High Oil Temperature -
Compressor 2B
F5 High Pressure Cutout -
Compressor 1A
F6 High Pressure Cutout -
Compressor 1B
BE High Pressure Cutout –
Compressor 2A
BF High Pressure Cutout –
Compressor 2B
RTAC-SVX002A-EN
Diagnostics
Severity Persistence
Normal NonLatch Evaporator water flow was not proven within 4.25 minutes (RTAC
Rev 20 and earlier) or 20 minutes (RTAC Rev 21) of the Chilled
water pump relay being energized. With SW Rev 170 and earlier,
the diagnostic will de-energize the Chilled Water Pump output. It
will be re-energized if the diagnostic clears with the return of flow
and the chiller will be allowed to restart normally (to accommodate
external control of pump) With SW Rev 18.0 and later, the pump
command status will not be effected. Note that this diagnostic will
not light the red diagnostic light on the EasyView display.
Immediate Latch Loss of comm with 75% or more of the LLIDs configured for the
system has been detected. This diagnostic will suppress the callout
of all subsequent comm loss diagnostics. Check power supply(s)
and power disconnects - troubleshoot LLIDS buss using TechView
Info NonLatch a. Function Not "Enabled": no diagnostics. b. "Enabled ": Out-
Of-Range Low or Hi or bad LLID, set diagnostic, default CWS
to next level of priority (e.g. Front Panel SetPoint). This Info
diagnostic will automatically reset if the input returns to the normal
range.
Info NonLatch Same as External Chilled Water Setpoint
Normal Latch The system differential pressure for the respective circuit was above
275 Psid for 2 consecutive samples or more than 10 seconds.
Normal Latch Same as High Differential Refrigerant Pressure - Circuit 1
Normal Latch The liquid level sensor is seen to be at or near its high end of
range for 80 contiguous minutes while the compressor is running.
(The diagnostic timer will hold, but not clear when the circuit is off).
Design: 80% or more of bit count corresponding to +21.2 mm or
more liquid level for 80 minutes)
Normal Latch Same as High Evaporator Liquid Level - Circuit 1
Immediate NonLatch The evaporator refrigerant pressure of either circuit has risen above
190 psig. The evaporator water pump relay will be de-energized to
stop the pump regardless of why the pump is running. The diagnostic
will auto reset and the pump will return to normal control when all
of the evaporator pressures fall below 185 psig. This diagnostic has
severity of Immediate because if an evaporator pressure reads high
without being invalid, the pump would be shut off but the chiller could
keep running. Evap water flow diagnostics are not active if the pump
is commanded off, only if the pump is commanded on but flow does
not occur as expected.
Immediate Latch The respective oil temperature as supplied to the compressor,
exceeded 200°F for 2 consecutive samples or for over 10 seconds.
Note: As part of the Compressor High Temperature Limit Mode (aka
Minimum Limit), the running compressor's female load step will be
forced loaded when its oil temperature exceeds 190F and returned
to normal control when the oil temperature falls below 170°F
Immediate Latch Same as High Oil Temperature - Compressor 1A
Immediate Latch Same as High Oil Temperature - Compressor 1A
Immediate Latch Same as High Oil Temperature - Compressor 1A
Immediate Latch A high pressure cutout was detected on Compressor 1A; trip at 315
± 5 PSIG. Note: Other diagnostics that may occur as an expected
consequence of the HPC trip will be suppressed from annunciation.
These include Phase Loss, Power Loss, and Transition Complete
Input Open.
Immediate Latch Same as High Pressure Cutout - Compressor 1A
Immediate Latch Same as High Pressure Cutout - Compressor 1A
Immediate Latch Same as High Pressure Cutout - Compressor 1A
Criteria Reset Level
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Remote
Local
Local
Local
Local
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